Accurate time-domain simulation is crucial for designing large and complex photonic integrated circuits (PICs). Passive devices and circuits, such as Mach-Zehnder interferometers and all kinds of wavelength filters, play important roles in PICs, with their input and output characteristics typically described using S-parameters. However, their practical application in the time domain is limited by the fact that they are usually band-limited. Applying the inverse fast Fourier transform (IFFT) directly to these band-limited S-parameters can result in impulse responses that violate causality significantly. To address this issue, this paper proposes a novel method for extrapolating S-parameters of photonic circuits in order to obtain causal and accurate impulse responses.
精确的时域模拟对于设计大型复杂光子集成电路（PIC）至关重要。马赫-泽恩德干涉仪和各种波长滤波器等无源器件和电路在光子集成电路中发挥着重要作用，它们的输入和输出特性通常使用 S 参数来描述。然而，它们在时域中的实际应用却受到限制，因为它们通常都有频带限制。直接对这些带限 S 参数应用反快速傅里叶变换 (IFFT) 可能会产生严重违反因果关系的脉冲响应。为解决这一问题，本文提出了一种外推光子电路 S 参数的新方法，以获得因果和准确的脉冲响应。
{"title":"Computing the causal impulse responses of passive photonic integrated circuits by extrapolation","authors":"Xiaoxue Jiang, Jiajun Feng, Yinghao Ye","doi":"10.1117/12.2687100","DOIUrl":"https://doi.org/10.1117/12.2687100","url":null,"abstract":"Accurate time-domain simulation is crucial for designing large and complex photonic integrated circuits (PICs). Passive devices and circuits, such as Mach-Zehnder interferometers and all kinds of wavelength filters, play important roles in PICs, with their input and output characteristics typically described using S-parameters. However, their practical application in the time domain is limited by the fact that they are usually band-limited. Applying the inverse fast Fourier transform (IFFT) directly to these band-limited S-parameters can result in impulse responses that violate causality significantly. To address this issue, this paper proposes a novel method for extrapolating S-parameters of photonic circuits in order to obtain causal and accurate impulse responses.","PeriodicalId":149506,"journal":{"name":"SPIE/COS Photonics Asia","volume":"46 1","pages":"127640Z - 127640Z-8"},"PeriodicalIF":0.0,"publicationDate":"2023-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139218942","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Xinyu Zheng, Ruixi Tang, Songxiang Liu, Ning Wang, Jie Zhang, Yong Zhu, Jianjun Chen
The photoacoustic sensor system based on Sagnac interference has extensive applications in perimeter security. Among them, the demand for synchronization recognition of multiple acoustic sources and integrated utilization becomes the key to expand its application field. By focusing on multi-source synchronization recognition, a lightweight optical-acoustic signal recognition algorithm that can be carried by an embedded system was studied. The collected optical-acoustic signals were extracted through preprocessing, Fast Fourier Transform (FFT), Mel filter bank (MFB), and other steps to obtain Mel spectrogram features, which were then used for optical-acoustic signal recognition using the MobilenetV3 network. The experimental results showed that this system achieved a synchronization recognition rate of 93% for six types of sounds, providing a possibility for implementing multi-sound recognition in embedded systems based on Sagnac interference photoacoustic sensor systems.
{"title":"Research on lightweight synchronization recognition algorithms for multiple acoustic sources in a photoacoustic sensor system based on Sagnac interference","authors":"Xinyu Zheng, Ruixi Tang, Songxiang Liu, Ning Wang, Jie Zhang, Yong Zhu, Jianjun Chen","doi":"10.1117/12.2687076","DOIUrl":"https://doi.org/10.1117/12.2687076","url":null,"abstract":"The photoacoustic sensor system based on Sagnac interference has extensive applications in perimeter security. Among them, the demand for synchronization recognition of multiple acoustic sources and integrated utilization becomes the key to expand its application field. By focusing on multi-source synchronization recognition, a lightweight optical-acoustic signal recognition algorithm that can be carried by an embedded system was studied. The collected optical-acoustic signals were extracted through preprocessing, Fast Fourier Transform (FFT), Mel filter bank (MFB), and other steps to obtain Mel spectrogram features, which were then used for optical-acoustic signal recognition using the MobilenetV3 network. The experimental results showed that this system achieved a synchronization recognition rate of 93% for six types of sounds, providing a possibility for implementing multi-sound recognition in embedded systems based on Sagnac interference photoacoustic sensor systems.","PeriodicalId":149506,"journal":{"name":"SPIE/COS Photonics Asia","volume":"47 1","pages":"1277206 - 1277206-9"},"PeriodicalIF":0.0,"publicationDate":"2023-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139219250","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The time-stretch imaging system is a promising method for achieving real-time imaging and low-latency cell screening. To facilitate the evaluation of time-stretch imaging systems for cell detection, we present a simulator for phase recovery in a time-stretch quantitative phase imaging (TS-QPI) system. The simulator enables the efficient evaluation of TS-QPI system, demonstrating the feasibility of accurate phase recovery for a wide range of cell screening conditions and designing the TS-QPI systems depending on the characteristics of the target cells. Furthermore, it allows synthesis of simulated phase images highly beneficial in data augmentation when training machine learning models for cell detection.
{"title":"Advancing phase recovery in time-stretch computational cell imaging","authors":"Yueqin Li, Jun Qin, Jian Sun, Min Miao","doi":"10.1117/12.2686695","DOIUrl":"https://doi.org/10.1117/12.2686695","url":null,"abstract":"The time-stretch imaging system is a promising method for achieving real-time imaging and low-latency cell screening. To facilitate the evaluation of time-stretch imaging systems for cell detection, we present a simulator for phase recovery in a time-stretch quantitative phase imaging (TS-QPI) system. The simulator enables the efficient evaluation of TS-QPI system, demonstrating the feasibility of accurate phase recovery for a wide range of cell screening conditions and designing the TS-QPI systems depending on the characteristics of the target cells. Furthermore, it allows synthesis of simulated phase images highly beneficial in data augmentation when training machine learning models for cell detection.","PeriodicalId":149506,"journal":{"name":"SPIE/COS Photonics Asia","volume":"53 1","pages":"1277204 - 1277204-6"},"PeriodicalIF":0.0,"publicationDate":"2023-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139219861","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Freeform optical components are increasingly demanded by optical manufacturers and researchers, and are always a challenging topic for metrologists. Form errors of the freeform surfaces resulting from the manufacturing process are critical, in terms of the functionality and reliability of the freeform optics. This paper presents two methodology case studies of off-axis aspheric optics using contact profilometry and non-contact scanning point interferometry. The contact method is accomplished by use of an ultra-low noise measurement platform, combined with a patented phase grating interferometry (PGI) technology and specially developed algorithms for calibration and analysis. The study shows the capability of the proposed method for high tangential slope freeform measurement. This slope measurement capability of PGI Freeform, together with its large gauge range, enables 3D form measurements for most freeform surfaces. However, for some optical surfaces non-contact measurement is preferred due to the possible surface damage caused by the stylus force of contact method. Non-contact scanning metrology is based on a patented multi-wavelength interferometry (MWLI) technology. It provides high density 3D data in short measurement times at a highly reproducible form measurement accuracy. The long-range absolute measurement capability of the MWLI sensor, together with its ultraprecision metrology platform and improved calibration routine through which the sensor accurately follows the designed shape of optical surfaces, enables precise 3D freeform surface measurements within its tangential slope measurement range.
{"title":"Precise surface form measurements of off-axis aspheric freeform optics","authors":"Zexiao Li, Xiaodong Zhang, Yang Yu","doi":"10.1117/12.2686791","DOIUrl":"https://doi.org/10.1117/12.2686791","url":null,"abstract":"Freeform optical components are increasingly demanded by optical manufacturers and researchers, and are always a challenging topic for metrologists. Form errors of the freeform surfaces resulting from the manufacturing process are critical, in terms of the functionality and reliability of the freeform optics. This paper presents two methodology case studies of off-axis aspheric optics using contact profilometry and non-contact scanning point interferometry. The contact method is accomplished by use of an ultra-low noise measurement platform, combined with a patented phase grating interferometry (PGI) technology and specially developed algorithms for calibration and analysis. The study shows the capability of the proposed method for high tangential slope freeform measurement. This slope measurement capability of PGI Freeform, together with its large gauge range, enables 3D form measurements for most freeform surfaces. However, for some optical surfaces non-contact measurement is preferred due to the possible surface damage caused by the stylus force of contact method. Non-contact scanning metrology is based on a patented multi-wavelength interferometry (MWLI) technology. It provides high density 3D data in short measurement times at a highly reproducible form measurement accuracy. The long-range absolute measurement capability of the MWLI sensor, together with its ultraprecision metrology platform and improved calibration routine through which the sensor accurately follows the designed shape of optical surfaces, enables precise 3D freeform surface measurements within its tangential slope measurement range.","PeriodicalId":149506,"journal":{"name":"SPIE/COS Photonics Asia","volume":"61 1","pages":"127650N - 127650N-12"},"PeriodicalIF":0.0,"publicationDate":"2023-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139220270","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Liangkun Dai, Chengchen Bi, Lu Chen, Zhaomin Rong, Wu Fei, Xiangyun Jiang, Chan Huang, Jigang Hu
Strong and narrow-linewidth circular dichroism (CD) spectroscopy promises potential applications in bio-chemical sensing and detection of the weak chirality in natural molecules. Here we proposed a chiral metasurface formed by the asymmetric metal double split ring resonator (DSRR) arrays, the circular dichroism (CD) of which has been investigated. The maximum CD for absorption response of the metasurface can reach 0.61 with an ultra-narrow spectral linewidth of 9.6 nm in the mid-infrared (MIR) band. Our calculation results show that the chiral metasurface can support two surface lattice resonance modes for the left circularly polarized (LCP) and right circularly polarized (RCP) light. The narrow linewidth of CD is enabled by the spin-selective high-Q resonance modes with a differential absorptivity for LCP and RCP light. Our findings shed light on the potential applications in spin-selective perfect optical absorption, high-sensitive polarization detection, and chirality sensing.
强窄线宽圆二色性（CD）光谱有望应用于生物化学传感和天然分子中弱手性的检测。在此，我们提出了一种由不对称金属双分裂环谐振器（DSRR）阵列形成的手性元表面，并对其圆二色性（CD）进行了研究。该元表面吸收响应的最大 CD 值可达 0.61，在中红外（MIR）波段的超窄光谱线宽为 9.6 nm。计算结果表明，手性元表面可支持左圆极化（LCP）和右圆极化（RCP）光的两种表面晶格共振模式。自旋选择性高 Q 值共振模式对左旋偏振光和右旋偏振光具有不同的吸收率，从而实现了 CD 的窄线宽。我们的发现揭示了自旋选择性完美光吸收、高灵敏度偏振检测和手性传感的潜在应用。
{"title":"Narrow-linewidth circular dichroism in asymmetric double split ring resonator metasurface","authors":"Liangkun Dai, Chengchen Bi, Lu Chen, Zhaomin Rong, Wu Fei, Xiangyun Jiang, Chan Huang, Jigang Hu","doi":"10.1117/12.2686499","DOIUrl":"https://doi.org/10.1117/12.2686499","url":null,"abstract":"Strong and narrow-linewidth circular dichroism (CD) spectroscopy promises potential applications in bio-chemical sensing and detection of the weak chirality in natural molecules. Here we proposed a chiral metasurface formed by the asymmetric metal double split ring resonator (DSRR) arrays, the circular dichroism (CD) of which has been investigated. The maximum CD for absorption response of the metasurface can reach 0.61 with an ultra-narrow spectral linewidth of 9.6 nm in the mid-infrared (MIR) band. Our calculation results show that the chiral metasurface can support two surface lattice resonance modes for the left circularly polarized (LCP) and right circularly polarized (RCP) light. The narrow linewidth of CD is enabled by the spin-selective high-Q resonance modes with a differential absorptivity for LCP and RCP light. Our findings shed light on the potential applications in spin-selective perfect optical absorption, high-sensitive polarization detection, and chirality sensing.","PeriodicalId":149506,"journal":{"name":"SPIE/COS Photonics Asia","volume":"38 1","pages":"1277305 - 1277305-6"},"PeriodicalIF":0.0,"publicationDate":"2023-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139220391","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
I. Vatnik, A. Kirik, Oleg A. Gorbunov, Dmitry V. Churkin
We present study of polarization properties of the narrow modes, generated in random Raman fiber lasers near the generation threshold. For this purpose, time and polarization resolved spectral measurements based on optical heterodyning technique were implemented, that allow reconstruction of the ratio of vertical and horizontal projections of the electrical field during the mode generation process. We revealed that modes have high degree of polarization, with the slow change of its state during the mode lifetime. Moreover, it appeared that each mode has its own randomly appeared state of polarization, even when the several modes are generated simultaneously.
{"title":"Polarization dynamics of ultra-narrow modes generated in random fiber lasers","authors":"I. Vatnik, A. Kirik, Oleg A. Gorbunov, Dmitry V. Churkin","doi":"10.1117/12.2687600","DOIUrl":"https://doi.org/10.1117/12.2687600","url":null,"abstract":"We present study of polarization properties of the narrow modes, generated in random Raman fiber lasers near the generation threshold. For this purpose, time and polarization resolved spectral measurements based on optical heterodyning technique were implemented, that allow reconstruction of the ratio of vertical and horizontal projections of the electrical field during the mode generation process. We revealed that modes have high degree of polarization, with the slow change of its state during the mode lifetime. Moreover, it appeared that each mode has its own randomly appeared state of polarization, even when the several modes are generated simultaneously.","PeriodicalId":149506,"journal":{"name":"SPIE/COS Photonics Asia","volume":"19 1","pages":"1277203 - 1277203-3"},"PeriodicalIF":0.0,"publicationDate":"2023-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139227520","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Electrically tunable metasurfaces have great potential for flexible response and high precision in wavefront control, making them highly applicable. However, there is currently a scarcity of electrically tunable metasurfaces working at visible wavelengths. An electrically tunable transmission metasurface working at 660nm was proposed in this paper. The metasurface integrates a transparent conductive oxide material ITO as a tunable electro-optical material. The design scheme of the electrically tunable metasurface is based on the classical Drude model. In the electric field, the variation of carrier concentration in the accumulation layer induced by bias voltage can enhance the nonlinear optical response and improve light field modulation effect. The proposed metasurface is structured with four symmetrically distributed rectangular patches nested with a circular ring. In addition, the phase modulation capability of this model has been theoretically analyzed. With a bias voltage of -4.9V~20V, a continuous transmission phase delay between 0°~191.45° at a wavelength of 660nm can be achieved. The proposal of the electrically tunable metasurface structure establishes a new means for transmitted beam wavefront shaping and modulation, and in the future, the metasurfaces designed with a continuous phase modulation at visible wavelength will suggest more applications in naked-eye 3D display, holographic imaging, and other fields.
{"title":"An electrically tunable metasurface for continuous phase modulation at visible wavelength based on indium tin oxide","authors":"Yu Wang, Huiyu Li, Guangwei Chen","doi":"10.1117/12.2686621","DOIUrl":"https://doi.org/10.1117/12.2686621","url":null,"abstract":"Electrically tunable metasurfaces have great potential for flexible response and high precision in wavefront control, making them highly applicable. However, there is currently a scarcity of electrically tunable metasurfaces working at visible wavelengths. An electrically tunable transmission metasurface working at 660nm was proposed in this paper. The metasurface integrates a transparent conductive oxide material ITO as a tunable electro-optical material. The design scheme of the electrically tunable metasurface is based on the classical Drude model. In the electric field, the variation of carrier concentration in the accumulation layer induced by bias voltage can enhance the nonlinear optical response and improve light field modulation effect. The proposed metasurface is structured with four symmetrically distributed rectangular patches nested with a circular ring. In addition, the phase modulation capability of this model has been theoretically analyzed. With a bias voltage of -4.9V~20V, a continuous transmission phase delay between 0°~191.45° at a wavelength of 660nm can be achieved. The proposal of the electrically tunable metasurface structure establishes a new means for transmitted beam wavefront shaping and modulation, and in the future, the metasurfaces designed with a continuous phase modulation at visible wavelength will suggest more applications in naked-eye 3D display, holographic imaging, and other fields.","PeriodicalId":149506,"journal":{"name":"SPIE/COS Photonics Asia","volume":"21 1","pages":"127650V - 127650V-11"},"PeriodicalIF":0.0,"publicationDate":"2023-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139218129","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The ability to manipulate light propagation is crucial for the development of optical communication and information processing systems. Photonic integrated circuits have gained significant attention due to their ability to integrate a large volume of components and operate at high speeds, making them ideal for handling the increasing data capacity and rate. In this study, we proposed and experimentally demonstrated a novel method for beam steering using waveguide arrays with specific distributed spacing profiles. By analyzing the diffraction and coherence properties, we discovered that a single waveguide array can perform imaging and phase transformation functions, which are typically achieved using optical lenses. To further enhance this capability, we fabricated corresponding devices on a silicon nitride waveguide platform and investigated the light propagation process through the arrayed waveguide. We successfully achieved various forms of beam steering, including focusing, expansion, and collimation. This beam control method holds great potential for on-chip optical routing, ranging, sensing, and other applications. It offers high integration density and scalability, making it a promising solution for the development of advanced optical systems.
{"title":"On-chip beam steering in gradient-index waveguide arrays","authors":"Yunfei Niu, Qingyang Du, Shaoliang Yu, Tao Chu","doi":"10.1117/12.2687110","DOIUrl":"https://doi.org/10.1117/12.2687110","url":null,"abstract":"The ability to manipulate light propagation is crucial for the development of optical communication and information processing systems. Photonic integrated circuits have gained significant attention due to their ability to integrate a large volume of components and operate at high speeds, making them ideal for handling the increasing data capacity and rate. In this study, we proposed and experimentally demonstrated a novel method for beam steering using waveguide arrays with specific distributed spacing profiles. By analyzing the diffraction and coherence properties, we discovered that a single waveguide array can perform imaging and phase transformation functions, which are typically achieved using optical lenses. To further enhance this capability, we fabricated corresponding devices on a silicon nitride waveguide platform and investigated the light propagation process through the arrayed waveguide. We successfully achieved various forms of beam steering, including focusing, expansion, and collimation. This beam control method holds great potential for on-chip optical routing, ranging, sensing, and other applications. It offers high integration density and scalability, making it a promising solution for the development of advanced optical systems.","PeriodicalId":149506,"journal":{"name":"SPIE/COS Photonics Asia","volume":"26 1","pages":"127640S - 127640S-3"},"PeriodicalIF":0.0,"publicationDate":"2023-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139220912","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
V. I. Pavlov, Nikita Kondratyev, Artem Shitikov, Valery E. Lobanov
The absorption of optical power in high-Q microresonators leads to thermal effects, that strongly affect quantum and nonlinear processes. To take these effects into account, rate equations with effective thermal parameters are commonly used. Despite the convenience and simplicity of this approach, its applicability for a certain range of microresonator parameters may not be accurate enough. In our work, we compared various methods for determination of the effective thermal parameters for different resonator structures: the microring and microtorus resonator. As a result, we propose an original and effective method for determining the effective thermal parameters of microresonators based on thermal mode decomposition that considers various thermal relaxation processes. The proposed method agrees better with both direct numerical simulation and well-known theoretical formulas over the entire range of microresonator parameters, in contrast to the classical approach.
{"title":"Thermal mode decomposition method for microresonator thermal parameters estimation","authors":"V. I. Pavlov, Nikita Kondratyev, Artem Shitikov, Valery E. Lobanov","doi":"10.1117/12.2686746","DOIUrl":"https://doi.org/10.1117/12.2686746","url":null,"abstract":"The absorption of optical power in high-Q microresonators leads to thermal effects, that strongly affect quantum and nonlinear processes. To take these effects into account, rate equations with effective thermal parameters are commonly used. Despite the convenience and simplicity of this approach, its applicability for a certain range of microresonator parameters may not be accurate enough. In our work, we compared various methods for determination of the effective thermal parameters for different resonator structures: the microring and microtorus resonator. As a result, we propose an original and effective method for determining the effective thermal parameters of microresonators based on thermal mode decomposition that considers various thermal relaxation processes. The proposed method agrees better with both direct numerical simulation and well-known theoretical formulas over the entire range of microresonator parameters, in contrast to the classical approach.","PeriodicalId":149506,"journal":{"name":"SPIE/COS Photonics Asia","volume":"48 1","pages":"127730O - 127730O-10"},"PeriodicalIF":0.0,"publicationDate":"2023-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139221954","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
With the development of Internet of Things (IoT) technology, there is an increasing demand for integrated optoelectronic systems. Multiple quantum well (MQW) diodes can transmit and receive information through visible light, serving as both light-emitting diodes (LEDs) and photodetectors. Furthermore, the overlap of emission-detection spectra in III-nitride MQW diodes provides an interesting capability of detecting and modulating their own emitted light. In this study, we have experimentally demonstrated the coexistence of emission-detection in III-nitride MQW diodes and established an optical-based wireless audio communication system. When the bias voltage is greater than the turn-on voltage and the device is simultaneously illuminated, III-nitride MQW diodes can achieve both light emission and detection. This work paves the way for developing versatile III-nitride MQW diodes for device-to-device data communication in smart displays.
随着物联网（IoT）技术的发展，对集成光电系统的需求日益增长。多量子阱（MQW）二极管可以通过可见光传输和接收信息，既是发光二极管（LED），又是光电探测器。此外，III-氮化物 MQW 二极管的发射-探测光谱重叠提供了一种有趣的探测和调制自身发射光的能力。在这项研究中，我们通过实验证明了 III 氮化物 MQW 二极管中发射与检测的共存性，并建立了一个基于光学的无线音频通信系统。当偏置电压大于开启电压且器件同时被照亮时，III-氮化物 MQW 二极管可以同时实现光发射和检测。这项工作为开发用于智能显示器设备间数据通信的多功能 III 氮化物 MQW 二极管铺平了道路。
{"title":"Visible light communication in III-nitride quantum-well diode","authors":"Binju Wang, Jianwei Fu, Yongjin Wang","doi":"10.1117/12.2687351","DOIUrl":"https://doi.org/10.1117/12.2687351","url":null,"abstract":"With the development of Internet of Things (IoT) technology, there is an increasing demand for integrated optoelectronic systems. Multiple quantum well (MQW) diodes can transmit and receive information through visible light, serving as both light-emitting diodes (LEDs) and photodetectors. Furthermore, the overlap of emission-detection spectra in III-nitride MQW diodes provides an interesting capability of detecting and modulating their own emitted light. In this study, we have experimentally demonstrated the coexistence of emission-detection in III-nitride MQW diodes and established an optical-based wireless audio communication system. When the bias voltage is greater than the turn-on voltage and the device is simultaneously illuminated, III-nitride MQW diodes can achieve both light emission and detection. This work paves the way for developing versatile III-nitride MQW diodes for device-to-device data communication in smart displays.","PeriodicalId":149506,"journal":{"name":"SPIE/COS Photonics Asia","volume":"24 1","pages":"1276414 - 1276414-6"},"PeriodicalIF":0.0,"publicationDate":"2023-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139222086","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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